Staphyloccocus aureus Rosenbach

I have Staphyloccocus aureus Rosenbach infection on my right arm. I was previously prescribed with antibiotics, though I ran out of pills and is low on money for a specialist. What are some treatments or antibiotics that I can get over-the-counter to prevent it from spreading or even curing it?

[JGF25]

First let me say that a S. aureus infection is serious.  What type of antibiotic did you take?  Do you know if you have a MRSA strain, methicillin resistant S. aureus strain?  If it did not get better with the antibiotic, tell me what you took,  then you need to go back to the doctor.  I hear you about the money but this is really important.  If you don't have the money for a doctor then find a free clinic you can go to or call the doctor back and say the antibiotic didn't work.  Please, please don't let this go and try over the counter things.  It needs to be treated by a doctor,